step-down converter and step-up converter
Advantages transformers with immersion in35 kV oil:
• Low energy loss and high efficiency, meeting national energy efficiency standards of Class I/II for long-term operation with lower energy consumption
• Excellent heat dissipation and overload capability, ideal for high performance applications with continuous load
• Consistent insulation performance with reliable oil insulation and extended service life
• High mechanical strength and strong short-circuit resistance, ensuring safe operation
• Mature design with high reliability, simplified maintenance and low failure rate
• Better cost-performance ratio - lowercosts for dry standard equipmenttransformers with equivalent power and wider application
• Suitable for outdoor installations, power plants, industrial/mining sites, wind and photovoltaic power retrofits and other high power scenarios
1. Product Introduction:
The 35 kV oil-immersed power transformer is the primary equipment for the transmission and distribution of electrical energy in 35 kV networks. Using electromagnetic induction, it reduces high-voltage power from 35 kV to the required low voltages of 10 kV or 0.4 kV. This device is widely used in regional substations, large industrial parks, wind energy facilities, photovoltaic power plants, hydroelectric projects, and critical power supply systems for industrial and mining facilities.
It offers significant advantages, including low energy loss, minimal noise, high reliability, and an extended service life, making it the preferred equipment for large-scale outdoor power supplies. It is particularly suitable for projects requiring extremely stable, continuous power supply.2. Basic technical parameters (customizable)
Product Type: Three-phase double or three-phase triple winding Rated Capacity: 50kVA - 63,000kVA Voltage Regulation Mode: Voltage regulation on load, free-loop or motorized free-loop voltage on high-voltage side Cooling Mode: ONAN / ONAF Connection Symbol: Dyn11 / YNd11 (Industrial Standard) Energy Efficiency Level: High-efficiency energy-saving transformer Standards: GB 1094, IEC 60076
Core material configurationCore: High-permeability grain-oriented silicon steel sheet, with low no-load loss and low noiseWindings: High-purity oxygen-free copper windings, with high mechanical strength and excellent short-circuit resistanceOil tank: Sealed structure, leak-proof, moisture-proof and long-term maintenance-free
3. Application scenarios
1. Large-scale industrial and energy bases • Main applications: steel mills, oil refineries, chemical plants and large-scale smelting plants.
• Demand matching: high power, high reliability and long service life to ensure continuous uninterrupted production.New Energy Power Plants • Main applications: Wind power plants, photovoltaic power plants, hydroelectric power plants and biomass power plants.
• Demand Matching Capability: Operating as a step transformer, it increases low voltage power up to 35 kV for grid integration with exceptional immunity to interference and weather conditions.Urban Power Grids and Regional Substations • Key applications: 35 kV regional substations, large urban complexes, office building clusters and high-speed rail stations.
• Demand Matching: As a regional energy hub, stable power distribution with minimal losses and low noise levels are key requirements.Infrastructure and key applications in the mining/industrial sector include railway traction stations, airports, ports, mines and pumping stations for oil and gas pipelines in remote areas.
• Demand Matching: Stable outdoor operation, resistant to wind-blown sand and extreme cold, ensuring long-term power supply for remote areas and large-scale infrastructure.Rural Power Grid and Urban-Rural Construction • Main applications: rural power grid modernization, county-level central substations and large-scale township industrial zones.
• Demand matching: high cost efficiency and low maintenance cost, capable of meeting the power transmission needs of large areas.


